BU21023GUL_16 Datasheet, PDF (7/21 Pages) Rohm – Resistive Type Touch Screen Controller ICs

BU21023GUL BU21023MUV BU21024FV-M
HOST-I/F mode (4-wire SPI)
(SCK=SCL_SCK, SI=SDA_SI, CSB=SEL_CSB, SO=SO)
CSB
SCK
SI
Write
t₆
t₇
t₉
t₁
t₂ t₃
t₄ t₅
W
W
W
W
0
A
A
A
A
6
5
4
3
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
A
A
A
D
D
D
D
D
D
D
D
D
D
D
D
D
2
1
0
7
6
5
4
3
2
1
0
7
6
5
1
0
Register Address
Write (WA)
Write (WA + 1)
Write (WA + n)
SI
Read
R
R
R
R
R
R
R
1
A
A
A
A
A
A
A
6
5
4
3
2
1
0
Register Address
t₈
SO
z
Read
R
R
R
R
R
R
R
R
R
R
R
R
R
z
D
D
D
D
D
D
D
D
D
D
D
D
D
7
6
5
4
3
2
1
0
7
6
5
1
0
Read (RA)
Read (RA + 1)
Read (RA + n)
Condition : VDD = 3.0V Ta=25°C
Parameter
Symbol
Min
CSB Setup Time
t1
30
Limit
Typ
-
Unit
Max
-
ns
SCK "H" Level Period
t2
30
-
-
ns
SCK "L" Level Period
t3
30
-
-
ns
SI Setup Time
t4
20
-
-
ns
SI Holding Time
t5
20
-
-
ns
CSB Holding Time
t6
20
-
-
ns
CSB "H" Level Time
t7
50
-
-
ns
Data Output Delay Time
t8
-
-
15
ns
SCK Frequency
t9
-
-
15
MHz
Note: SPI interface is selected by tying IFSEL pin to logic low. IFSEL= logic high selects the 2-wire Interface
Conditions
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TSZ02201-0L5L0F300840-1-2
7.June.2016 Rev.004